Question

A box contains nine slips bearing the numbers $-4,-3,-2,-1,0,1,2,3,4$. A slip is drawn 9 times with replacement and the slip numbers noted, are arranged row wise to form a $3\times 3$ matrix, starting from the first element of first row and continuing in this similar manner then, the probability that the matrix so formed is a skew-symmetric is equal to ${\left(\frac{1}{m}\right)}^n$ then $m-n$ is equal to

Answer 1

Answer: 4

Correct answer is (d)